Android Implementation Bounce Spectrum DEMO

 Packagecom.terry.AudioFx;Importandroid.app.Activity;ImportAndroid.content.Context;ImportAndroid.graphics.Canvas;ImportAndroid.graphics.Color;ImportAndroid.graphics.Paint;ImportAndroid.graphics.Rect;ImportAndroid.media.AudioManager;ImportAndroid.media.MediaPlayer;ImportAndroid.media.MediaPlayer.OnCompletionListener;ImportAndroid.media.audiofx.Equalizer;ImportAndroid.media.audiofx.Visualizer;ImportAndroid.media.audiofx.Visualizer.OnDataCaptureListener;ImportAndroid.os.Bundle;ImportAndroid.util.Log;Importandroid.view.Gravity;ImportAndroid.view.View;ImportAndroid.view.ViewGroup;Importandroid.widget.LinearLayout;ImportAndroid.widget.SeekBar;ImportAndroid.widget.TextView;ImportAndroid.widget.SeekBar.OnSeekBarChangeListener; Public classAudiofxactivityextendsActivity {Private Static FinalString TAG = "Audiofxactivity"; Private Static Final floatVisualizer_height_dip =50f; PrivateMediaPlayer Mmediaplayer; PrivateVisualizer Mvisualizer; PrivateEqualizer Mequalizer;//Equalization Device    PrivateLinearLayout mlayout;    Visualizerview Mvisualizerview; PrivateTextView Mstatustextview;  Public voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate);        Setvolumecontrolstream (Audiomanager.stream_music); Mstatustextview=NewTextView ( This); Mlayout=NewLinearLayout ( This);        Mlayout.setorientation (linearlayout.vertical);        Mlayout.addview (Mstatustextview);        Setcontentview (mlayout); Mmediaplayer= Mediaplayer.create ( This, r.raw.z8806c);        Setupvisualizerfxandui ();        Setupequalizefxandui (); Mvisualizer.setenabled (true); Mmediaplayer.setoncompletionlistener (NewOncompletionlistener () {@Override Public voidOncompletion (MediaPlayer MP) {//TODO auto-generated Method StubMvisualizer.setenabled (false);        }        });        Mmediaplayer.start (); Mstatustextview.settext ("Play in ... "); }    /*** Create a priority 0 Equalizer object via the Audiosessionid returned by Mmediaplayer and generate the corresponding UI and corresponding events through the Spectrum*/    Private voidSetupequalizefxandui () {Mequalizer=NewEqualizer (0, Mmediaplayer.getaudiosessionid ()); Mequalizer.setenabled (true);//Enable EqualizerTextView Eqtextview =NewTextView ( This); Eqtextview.settext ("Equalizer:");        Mlayout.addview (Eqtextview); //get the Spectrum engine supported by the Equalizer         ShortBands =mequalizer.getnumberofbands (); //Getbandlevelrange is an array that returns an array of spectral levels,//The first subscript is the lowest limit range//The second subscript is the maximum upper limit, which is taken out in turn        Final  ShortMinequalizer = Mequalizer.getbandlevelrange () [0]; Final  ShortMaxequalizer = Mequalizer.getbandlevelrange () [1];  for( Shorti = 0; I < bands; i++) {            Final  ShortBand =i; TextView Freqtextview=NewTextView ( This); Freqtextview.setlayoutparams (Newviewgroup.layoutparams (ViewGroup.LayoutParams.FILL_PARENT, Viewgroup.layoutpar Ams.            Wrap_content));            Freqtextview.setgravity (gravity.center_horizontal); //Remove Center FrequencyFreqtextview SetText (Mequalizer.getcenterfreq (band)/+) + "HZ");            Mlayout.addview (Freqtextview); LinearLayout Row=NewLinearLayout ( This);            Row.setorientation (linearlayout.horizontal); TextView Mindbtextview=NewTextView ( This); Mindbtextview.setlayoutparams (Newviewgroup.layoutparams (ViewGroup.LayoutParams.WRAP_CONTENT, VIEWGROUP.LAYOUTPA Rams.            Wrap_content)); Mindbtextview.settext ((Minequalizer/+) + "DB"); TextView Maxdbtextview=NewTextView ( This); Maxdbtextview.setlayoutparams (Newviewgroup.layoutparams (ViewGroup.LayoutParams.WRAP_CONTENT, VIEWGROUP.LAYOUTPA Rams.            Wrap_content)); Maxdbtextview.settext ((Maxequalizer/+) + "DB"); Linearlayout.layoutparams Layoutparams=Newlinearlayout.layoutparams (ViewGroup.LayoutParams.FILL_PARENT, Viewgroup.layout            Params.wrap_content); Layoutparams.weight= 1; SeekBar SeekBar=NewSeekBar ( This);            Seekbar.setlayoutparams (Layoutparams); Seekbar.setmax (Maxequalizer-Minequalizer);            Seekbar.setprogress (Mequalizer.getbandlevel (band)); Seekbar.setonseekbarchangelistener (NewOnseekbarchangelistener () {@Override Public voidOnstoptrackingtouch (SeekBar SeekBar) {} @Override Public voidOnstarttrackingtouch (SeekBar SeekBar) {} @Override Public voidOnprogresschanged (SeekBar SeekBar,intProgress,BooleanFromuser) {                    //TODO auto-generated Method StubMequalizer.setbandlevel (band, ( Short) (Progress +Minequalizer));            }            });            Row.addview (Mindbtextview);            Row.addview (Seekbar);            Row.addview (Maxdbtextview);        Mlayout.addview (row); }    }    /*** Generate a Visualizerview object so that the band of the audio spectrum can be reflected on the Visualizerview*/    Private voidSetupvisualizerfxandui () {Mvisualizerview=NewVisualizerview ( This); Mvisualizerview.setlayoutparams (NewViewgroup.layoutparams (ViewGroup.LayoutParams.FILL_PARENT, (int) (VISUALIZER_HEIGHT_DIP *getresources (). Getdisplaymetrics (). density));        Mlayout.addview (Mvisualizerview); Mvisualizer=NewVisualizer (Mmediaplayer.getaudiosessionid ()); //the number of digits in the parameter must be 2Mvisualizer.setcapturesize (Visualizer.getcapturesizerange () [1]); //set allow waveform representation, and capture itMvisualizer.setdatacapturelistener (NewOndatacapturelistener () {@Override Public voidonwaveformdatacapture (Visualizer Visualizer,byte[] Waveform,intsamplingrate) {                //TODO auto-generated Method StubMvisualizerview.updatevisualizer (waveform); } @Override Public voidOnfftdatacapture (Visualizer Visualizer,byte[] FFT,intsamplingrate) {                //TODO auto-generated Method Stub}}, Visualizer.getmaxcapturerate ()/2,true,false); } @Overrideprotected voidOnPause () {//TODO auto-generated Method Stub        Super. OnPause (); if(Isfinishing () && mmediaplayer! =NULL) {mvisualizer.release ();            Mmediaplayer.release ();            Mequalizer.release (); Mmediaplayer=NULL; }    }    classVisualizerviewextendsView {Private byte[] mBytes; Private float[] mpoints; //Rectangular Area        PrivateRect Mrect =NewRect (); //Brushes        PrivatePaint Mpaint =NewPaint (); //Initializing brushes        Private voidinit () {mBytes=NULL;            Mpaint.setstrokewidth (1f); Mpaint.setantialias (true);        Mpaint.setcolor (Color.Blue); }         PublicVisualizerview (Context context) {Super(context);        Init (); }         Public voidUpdatevisualizer (byte[] mbyte) {MBytes=MByte;        Invalidate (); } @Overrideprotected voidOnDraw (canvas canvas) {//TODO auto-generated Method Stub            Super. OnDraw (canvas); if(MBytes = =NULL) {                return; }            if(Mpoints = =NULL|| Mpoints.length < Mbytes.length * 4) {mpoints=New float[Mbytes.length * 4]; } mrect.set (0, 0, GetWidth (), getheight ());  for(inti = 0; i < mbytes.length-1; i++) {mpoints[i* 4] = mrect.width () * I/(mbytes.length-1); Mpoints[i* 4 + 1] = Mrect.height ()/2 + ((byte) (Mbytes[i] + +)) * (Mrect.height ()/2)                        /128; Mpoints[i* 4 + 2] = Mrect.width () * (i + 1)                        /(Mbytes.length-1); Mpoints[i* 4 + 3] = Mrect.height ()/2 + ((byte) (Mbytes[i + 1] + +)) * (Mrect.height ()/2)                        /128;        } canvas.drawlines (Mpoints, mpaint); }    }}

Android Implementation Bounce Spectrum DEMO